Four-dimensionalism

Objects persist by having temporal parts

Four-dimensionalism posits that objects are extended in time as well as space, meaning they have temporal parts just as they have spatial parts. This view contrasts with presentism, which holds that only the present moment is real. Four-dimensionalism includes theories like perdurantism and stage theory, which explain how objects persist over time by having distinct temporal parts.

Example

Consider a tree that grows over time. According to four-dimensionalism, the tree at different times (its temporal parts) are distinct entities, just as its parts at different times (like branches) are distinct spatial parts.

Remember this

Understanding four-dimensionalism helps clarify debates about identity over time and the nature of temporal reality.

Text adapted from Wikipedia, licensed under CC BY-SA 4.0.

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